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Finding the Fourth Proportional to 22,318,438.88, 30,799,429.88 and 12,528,902.00

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Solution

The fourth proportional to 22,318,438.88, 30,799,429.88 and 12,528,902.00 is: 17,289,875.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,318,438.88 : 30,799,429.88 = 12,528,902.00 : x
  2. Step 2: Convert to fraction form
    22,318,438.88/30,799,429.88 = 12,528,902.00/x
  3. Step 3: Cross multiply
    22,318,438.88x = 30,799,429.88 × 12,528,902.00
  4. Step 4: Simplify right side
    22,318,438.88x = 385,883,038,636,745.81
  5. Step 5: Solve for x
    x = 385,883,038,636,745.81/22,318,438.88
  6. Step 6: Final answer
    x = 17,289,875.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.